Cake-mixer.



W. G. KIRCHHOFF.

`CAKE MIXER.

A APPLICATION FILED APR. 2B. 1913.

Patelted Mar. 14, 1916.

uisurilDA STATES PATENT OFFICE.

WILLIAM G. KIRCHHOFF, 0F S'l.A LOUIS, MISSOUBL'ASSIGNOR TO -AMERICAN BAKERS MACHINERY COMPANY, 0F ST. LOUIS, MISSOURI, -A CORPORATION OF MISSOURI.

y CAKE-Mixen.

` Patented Mar. 14, i916.

Application filed Apri128, 1913. Serial No. 764,047.

To all whom t may concern.'

Be itlmown that I, VVILLI'AM G`. KIRCH- Horn,l a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in CakelMixers, of which the following is a full,

clear, and exact description, such aswill enable others skilled inthe art to which'it appertainsto make and use the same, reference being had to the accompanying drawin s ,forminor art of thiss eciiication in a e P d which* Figure l is an elevation of my improved cake mixer partly in section. Fig. 2 is a plan view in section on line 2 2 of Fig). 1.

' detail showing a` otp attaching means.

Fig. 4 is a detail showing anl improved form of whip attaching means..

My invention relates broadly` to bakers machinery, and specifically to`an improved device known. as a cake mixer, designed for .'the mixing of battersfdough, and similar substances. a

The principal objects. of my invention are, to facilitate the removalgof the bowl containing`v the mixed substance from the ma- I chine, and to provide a means for adjusting the beaters relative to the mixing bowl.

' vide a means whereby the beaters may be de- Another object of my invention is to protached readily yfrom their operating devices so as' to facilitate the removal of the bowl.

Another object .of my invention is top rovide means for protecting the mixture in the bowl from oil or other foreign matter which may be on the operating mechanism.

A 'further` object of my invention is to provide .an improved attaching means for the stirring members.

A stilly further object of my invention is l i to provide an improved mounting for a beating instrument known as a whip which is usedc/ for frothing up eggs, and similar purposes. Other and further objects of my inventlon will be obvious, or hereinafter pointedouft.A

L By reference to the drawings Vitrwill be understood that my invention contemplates a suitable support or casing' 1, upon.l which is mounted a driving shaft 2 the operation of. which may be controlled from any suitable, clutch and changespeed mechanism. The casing or support l'carries bearingsf, inv which is journaled a vertical shaft 5. This -shaft is provided with suitable thrust bear-f sequently, when header 9 is rotated by shaft v 5 beater shafts 10, whilebeing revolved a out center yC will also be rotated on their own axes by virtue 'of the coperationof pinions 12 with annular gear'll. A

Pivoted on a suitable support 14 is the bowl ring 15, in which is seated the mixing bowl 16. By virtue of itspivotal mounting bowl ring 15 is adapted tobe swung under header 9, as indicated by dottedflines 15 in Fig.l 2, in which position it may be secured by suitable securing means 17. When it is desired to remove the bowl from the ring it may be swung outwardly to the position as indicated` in solid lines in Fig. 2, in which p osltion the bowl may be removed. fromthe ring, 1t being clear of header 9 and the parts carried thereby.

By a suitable novel mechanism, beaters 1,8 are secured to rotate with beater shafts 10 and to coperate with bowl 16 in the mixing operation. In order to secure proper c0- operation of beatersv 18 with the sides of the bowl, it is necessary thatthey be adjustable with reference to the bowl, and in order to swing the bowl out into clear position, it is necessary that the beaters be capable of quick andl easy detachment dfrom their mountings. The mechanismnow to be described is adapted to secure these desirable results.

The lower ends of beater shafts 10 are milled down square, as. shown at 10a.

Mounted to rotate on eachof beater shafts ,Hand nut 19 and foot member 21 are provided with coperating threads, so vthat when hand nut 19 is rotated foot member 2l will f be moved upward or downward on milled 110 30 away from the beaters. This upward-.moveportion 10? of-its beater shaft 10. Vertical v25 which are adapted to coperate with'pin slots 26 in the beater supports 27, to which the beaters 18 are secured. The beaters are secured to the beater. shafts 10 by inserting pins 25 in the enlarged portions of pin slots 26, and then rotating the beaters so as to move the smaller portions of pin slots 26 into engagement with pins 25 under the heads of' such pins. The beater supports are held in this position by. suitable screws 28 which prevent the movement of beaterl supports 27 relative to foot members 21.,

The beaters may be quickly and `readily detached from beater shafts 10v by loosening the screws 28 and then rotating the beater supports 27 or reversely rotating beater shafts 10'so as to disengage pins -25 from the narrow portions of slots 26, and then by freeing hand nuts 19 and then rotating them to retract foot members 21 upwardly ment of foot members 21 also elevates them clear of'bowl 16 so that the same may be swungI clear, as above described. The vupward and downward movement of foot members 21, as just'described, also serves to adjust beaters 18 relative to the sides and boti tom -of bowl 16.

f Seated on beater shafts 10 below the lower extremities of4 header 9 are oil collars 29.

- 'Each of these is formed with an annular interior chamber-like portion which may be tapped from the outward by an aperture closed by tap screw 31u Any oil which may -run down beater shafts 10 is caught by these 32 by a suitablescrew 37, by which it may be drawn up .within the skirt portion'32.

Clampmg disk 36 is provided with concentrically arrangedchannels 38, through which the whips 35 pass, the whips are inserted through channels 38 and their ends seated in seats 34. The screw 37 is then tightened to draw, the clampingV disk 36 upwardly, which tends vto move channels 38 and seats 34 out -of alinement, with the result that lthe whips 35v are tightly clamped in the of lsaid shaft, a foot memberl slidable on the shaft and secured for rotation therewith, said foot member having a portlon movable within the said sleeve and lhaving screwthread engagement therewith, and means for "securing a stirring blade to said foot member.

' '-2. Ina machine of the class described, a

beater shaft, a sleeve member and a foot on, a beater including a supporting part in' the form of a plate adapted to lit against'the foot member, said foot member'y and said oil collars 29 and 5held in the chambers 30k supporting plate being provided with'interJ cream a special form of mountlng '1s provided, as illustrated in Fig. 4. This mounting comprises the support member 32 which is provided with Aconcentrically disposed seats 34 adaptedto receive the ends of the whips35. The support 32 has a depending skirt portion 32, within which fits a clamping disk 36. This is secured to the support' *tiverotation. l

engaging portlons disposed non-axially of the shaft and releasable by relative rotation of the beater and the shaft, and adjustable `member telescopically mounted thereon, thef former being revoluble on the shaft and the 

